Spinneret for the manufacture of artificial filaments



Patented Sept. 22, 1936 PATENT OFFICE SPINNERET FOR THE MANUFACTURE F ARTIFICIAL FILAMENTS William J. Smith, Philadelphia, Pa., assigner of Y one-half to William H. Redheier, Jr., and onefourth to Abraham C. Stevenson, both of Philadelphia, Pa.

Application August 23, 1935, Serial No. 37,435

3 Claims.

One object of the present invention is to provide a spinneret of comparatively small rst cost and of great durability and which can be properly engaged and clamped by the coupling ring which secures it tothe feed pipe and which permits of the use of detachable or interchangeable disks that can be applied and removed Without deforming or otherwise marring them or their holder.

To this and other ends hereinafter set forth or appearing the invention comprises a perforated disk and nested sleeves having screw thread engagement between them and of which the outer one is provided with an inturned fiat flange at one end and with an outturned flat flange at the other end and is of substantially uniform outside diameter between one end and the outturned flange to provide for the application and engagement of feed pipe coupling rings with the root of the outturned flange and of which the inner one at its end cooperates with the flat face of the inturned flange to detachably lock the perforated disk.

Other objects of the invention will appear from the following description at the end 0f which the invention will be claimed.

In the following description reference will be made to the accompanying drawing forming part hereof and in which,

Figure 1 is a central sectional view of a spinneret embodying features of the invention.

Figure 2 is an end View of the spinneret shown in Figure 1.

Figure 3 is a perspective view of the perforated disk; and

Figure 4 is a perspective view of a type of key that may be employed for locking and unlocking the disk in respect to its holder.

Referring to the drawing,

The spinneret comprises three parts. I and 2 indicate nested sleeves having screw thread engagement 3 between them. The outer sleeve 2 is provided with an inturned flat faced flange 4 at one end and with an outturned flat faced flange 5 at the other end. This sleeve is of substantially uniform outside diameter between one end, lefthand in the drawing, and the outturned flange 5. The inner sleeve I at its end cooperates with the flat face of the inturned flange 4 to detachably lock the perforated disk 6. The inner sleeve I is provided with notches I for the accommodation of a key 8 in the nature of a Spanner and having lugs 9 for cooperation With the notches 'I. 'I'he disk 6 can be made of precious metal and it is very thin and costly. The sleeves I and 2 can be made of non-precious metal, thus the initial cost is comparatively small, but the fact that the disks can be detached from the holder and replaced, so that a variety of disks can be used interchangeably, without deforming or otherwise marring the parts, greatly prolongs the useful life 5 and in that way a substantial economy is effected. To remove the disks it is only necessary to unscrew the inner sleeve I and this can be readily done by means of a spanner 2. When the inner sleeve is removed the disk can be readily taken 10 out of the outer sleeve Without deforming it or otherwise marring any of the parts. When the described spinneret is in use it is mounted on the end of a feed pipe or the like by means of a coupling ring. These parts are not shown because 15 they are too well understood to require illustration. The fact that the outer sleeve 2 is of uniform outside diameter enables it to be inserted through the coupling ring and the coupling ring can bear upon the flat face of the flange 5 at its root which is generally indicated at 8. This is an obvious advantage.

It will be obvious to those skilled in the art to which the invention relates that modifications may be made in details of construction and arrangement without departing from the spirit of the invention, which is not limited as to such matters or otherwise than the prior art and the appended claims may require.

I claim:

1. A spinneret comprising in combination a flat perforated disk and nested sleeves having screw thread engagement between them and of which the outer one is provided with an inturned flat faced flange at one end and with an outturned llat faced flange at the other end and is of substantially uniform outside diameter between one end and the outturned flange, and of which the inner sleeve at its inner end cooperates with the flat face of the inturned flange to clamp the edge of said disk between them.

2. A three part spinneret of which one part is a tubular cylindrical body having at one end an inturned flat-faced flange and at the other end outturned flange and adapted to receive a coupling element of substantially the same inside diameter as the outside diameter of the sleeve whereby the coupling engages the outturned flange at its root, and of which the second part is a flat perforated disk removably seated on the inturned flange and conforming to the inside diameter of the body and of which the third part is a cylindrical sleeve of which one end locks the disk on the face of the inturned flange and of which the other end is notched for the reception of a Spanner` tool, there being provided screw thread engagement between the body and sleeve.

and is of the same outside diameter between the flanges, and'of whichthe second parti isa cylindrical sleeve nested in the body and having screw thread engagement therewith, and of which the third part is a at perforated disk detachably locked between the inner face of the inturned flange and one end of the sleeve.

WILLIAM J. SMITH. 

